<h3>描述</h3>
<p>Actionmenu菜单按钮组件，支持聚焦autofoucs/focus()/tabindex</p>
<h3>示例</h3>
<p>1.autofocus：</p>
<div style="margin: 0 auto">
  <ti-actionmenu autofocus [items]="items" (select)="onSelect($event)"> </ti-actionmenu>
</div>
<p>2.focus()：</p>
<div style="margin: 0 auto">
  <ti-actionmenu #myactionmenu [items]="items" (select)="onSelect($event)">
    <ng-template let-item let-i="index">
      <span>{{item.label}}</span>
    </ng-template>
  </ti-actionmenu>
  <br />
  <button (click)="myactionmenu.focus()">组件focus()</button>
  &nbsp;
  <button (click)="myactionmenu.blur()">组件blur()</button>
  &nbsp;
  <button (click)="myactionmenu.nativeElement.focus()">标签元素focus()</button>
</div>
<p>3.tabindex：</p>
<div style="margin: 0 auto">
  <ti-actionmenu tabindex="3" [items]="items" (select)="onSelect($event)"> </ti-actionmenu>
</div>
